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Foster

Foster quick couplers set the standard in pneumatic and hydraulic connections. Part of the ZSI-Foster line, Foster couplers and plugs cover the full range of industrial interchanges and body sizes in steel, brass, and stainless construction. Built for reliable, repeatable connections in air and fluid systems. Shop the full Foster range below.

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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 71.49
$ 71.49 - $ 71.49
$ 71.49
$ 57.19
$ 57.19 - $ 57.19
$ 57.19

Foster FM6206W, 3/4" Industrial Coupler x 1/2" Female NPT, 6 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6206W is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 71.49
$ 71.49 - $ 71.49
$ 71.49
$ 57.19
$ 57.19 - $ 57.19
$ 57.19
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 79.19
$ 79.19 - $ 79.19
$ 79.19
$ 63.39
$ 63.39 - $ 63.39
$ 63.39

Foster SL6206, 3/4" Industrial Coupler x 1/2" Female NPT, 6 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL6206 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 79.19
$ 79.19 - $ 79.19
$ 79.19
$ 63.39
$ 63.39 - $ 63.39
$ 63.39
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 65.99
$ 65.99 - $ 65.99
$ 65.99
$ 52.79
$ 52.79 - $ 52.79
$ 52.79

Foster FM6206, 3/4" Industrial Coupler x 1/2" Female NPT, 6 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6206 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 65.99
$ 65.99 - $ 65.99
$ 65.99
$ 52.79
$ 52.79 - $ 52.79
$ 52.79
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 31.79
$ 31.79 - $ 31.79
$ 31.79
$ 25.49
$ 25.49 - $ 25.49
$ 25.49

Foster PP19-5, 1/2" Industrial Plug x Reusable Hose Fitting, 1/2" ID x 1" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PP19-5 is a Steel 1/2" industrial plug from the Foster 5 Series ...

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$ 31.79
$ 31.79 - $ 31.79
$ 31.79
$ 25.49
$ 25.49 - $ 25.49
$ 25.49
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 50.49
$ 50.49 - $ 50.49
$ 50.49
$ 40.39
$ 40.39 - $ 40.39
$ 40.39

Foster PP17-5, 1/2" Industrial Plug x Reusable Hose Fitting, 1/2" ID x 15/16" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PP17-5 is a Steel 1/2" industrial plug from the Foster 5 Series ...

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$ 50.49
$ 50.49 - $ 50.49
$ 50.49
$ 40.39
$ 40.39 - $ 40.39
$ 40.39
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 39.49
$ 39.49 - $ 39.49
$ 39.49
$ 31.59
$ 31.59 - $ 31.59
$ 31.59

Foster PP15-5, 1/2" Industrial Plug x Reusable Hose Fitting, 1/2" ID x 7/8" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PP15-5 is a Steel 1/2" industrial plug from the Foster 5 Series ...

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$ 39.49
$ 39.49 - $ 39.49
$ 39.49
$ 31.59
$ 31.59 - $ 31.59
$ 31.59
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 37.09
$ 37.09 - $ 37.09
$ 37.09
$ 29.59
$ 29.59 - $ 29.59
$ 29.59

Foster PP13-5, 1/2" Industrial Plug x Reusable Hose Fitting, 1/2" ID x 13/16" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PP13-5 is a Steel 1/2" industrial plug from the Foster 5 Series ...

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$ 37.09
$ 37.09 - $ 37.09
$ 37.09
$ 29.59
$ 29.59 - $ 29.59
$ 29.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 39.99
$ 39.99 - $ 39.99
$ 39.99
$ 31.99
$ 31.99 - $ 31.99
$ 31.99

Foster PD13-5, 1/2" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PD13-5 is a Steel 1/2" industrial plug from the Foster 5 Series ...

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$ 39.99
$ 39.99 - $ 39.99
$ 39.99
$ 31.99
$ 31.99 - $ 31.99
$ 31.99
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 20.29
$ 20.29 - $ 20.29
$ 20.29
$ 16.19
$ 16.19 - $ 16.19
$ 16.19

Foster PD11-5, 1/2" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 3/4" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PD11-5 is a Steel 1/2" industrial plug from the Foster 5 Series ...

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$ 20.29
$ 20.29 - $ 20.29
$ 20.29
$ 16.19
$ 16.19 - $ 16.19
$ 16.19
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 18.89
$ 18.89 - $ 18.89
$ 18.89
$ 15.19
$ 15.19 - $ 15.19
$ 15.19

Foster PD9-5, 1/2" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 11/16" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PD9-5 is a Steel 1/2" industrial plug from the Foster 5 Series —...

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$ 18.89
$ 18.89 - $ 18.89
$ 18.89
$ 15.19
$ 15.19 - $ 15.19
$ 15.19
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 18.89
$ 18.89 - $ 18.89
$ 18.89
$ 15.09
$ 15.09 - $ 15.09
$ 15.09

Foster PD7-5, 1/2" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 5/8" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PD7-5 is a Steel 1/2" industrial plug from the Foster 5 Series —...

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$ 18.89
$ 18.89 - $ 18.89
$ 18.89
$ 15.09
$ 15.09 - $ 15.09
$ 15.09
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 29.19
$ 29.19 - $ 29.19
$ 29.19
$ 23.39
$ 23.39 - $ 23.39
$ 23.39

Foster 81-5B, 1/2" Industrial Plug x 1/2" Push-On Hose Stem, 5 Series, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 81-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 29.19
$ 29.19 - $ 29.19
$ 29.19
$ 23.39
$ 23.39 - $ 23.39
$ 23.39
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 10.29
$ 10.29 - $ 10.29
$ 10.29
$ 8.19
$ 8.19 - $ 8.19
$ 8.19

Foster 81-5, 1/2" Industrial Plug x 1/2" Push-On Hose Stem, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 81-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 10.29
$ 10.29 - $ 10.29
$ 10.29
$ 8.19
$ 8.19 - $ 8.19
$ 8.19
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 10.99
$ 10.99 - $ 10.99
$ 10.99
$ 8.79
$ 8.79 - $ 8.79
$ 8.79

Foster 71-5, 1/2" Industrial Plug x 3/8" Push-On Hose Stem, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 71-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 10.99
$ 10.99 - $ 10.99
$ 10.99
$ 8.79
$ 8.79 - $ 8.79
$ 8.79
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 19.79
$ 19.79 - $ 19.79
$ 19.79
$ 15.79
$ 15.79 - $ 15.79
$ 15.79

Foster 61-5B, 1/2" Industrial Plug x 3/4" Hose ID, 5 Series, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 61-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 19.79
$ 19.79 - $ 19.79
$ 19.79
$ 15.79
$ 15.79 - $ 15.79
$ 15.79
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 14.89
$ 14.89 - $ 14.89
$ 14.89
$ 11.89
$ 11.89 - $ 11.89
$ 11.89

Foster 61-5, 1/2" Industrial Plug x 3/4" Hose ID, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 61-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 14.89
$ 14.89 - $ 14.89
$ 14.89
$ 11.89
$ 11.89 - $ 11.89
$ 11.89
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 12.19
$ 12.19 - $ 12.19
$ 12.19
$ 9.79
$ 9.79 - $ 9.79
$ 9.79

Foster 60-5B, 1/2" Industrial Plug x 1/2" Hose ID, 5 Series, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 60-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 12.19
$ 12.19 - $ 12.19
$ 12.19
$ 9.79
$ 9.79 - $ 9.79
$ 9.79
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 14.49
$ 14.49 - $ 14.49
$ 14.49
$ 11.59
$ 11.59 - $ 11.59
$ 11.59

Foster 60-5G, 1/2" Industrial Plug x 1/2" Hose ID, 5 Series, Ball Check, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 60-5G is a Steel 1/2" industrial plug from the Foster 5 Series —...

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$ 14.49
$ 14.49 - $ 14.49
$ 14.49
$ 11.59
$ 11.59 - $ 11.59
$ 11.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 6.99
$ 6.99 - $ 6.99
$ 6.99
$ 5.59
$ 5.59 - $ 5.59
$ 5.59

Foster 60-5, 1/2" Industrial Plug x 1/2" Hose ID, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 60-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 6.99
$ 6.99 - $ 6.99
$ 6.99
$ 5.59
$ 5.59 - $ 5.59
$ 5.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 15.49
$ 15.49 - $ 15.49
$ 15.49
$ 12.39
$ 12.39 - $ 12.39
$ 12.39

Foster 59-5B, 1/2" Industrial Plug x 3/8" Hose ID, 5 Series, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 59-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 15.49
$ 15.49 - $ 15.49
$ 15.49
$ 12.39
$ 12.39 - $ 12.39
$ 12.39
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 10.69
$ 10.69 - $ 10.69
$ 10.69
$ 8.59
$ 8.59 - $ 8.59
$ 8.59

Foster 59-5, 1/2" Industrial Plug x 3/8" Hose ID, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 59-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 10.69
$ 10.69 - $ 10.69
$ 10.69
$ 8.59
$ 8.59 - $ 8.59
$ 8.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 13.79
$ 13.79 - $ 13.79
$ 13.79
$ 10.99
$ 10.99 - $ 10.99
$ 10.99

Foster 54S-5, 1/2" Industrial Plug x 1/2" Male NPT, 5 Series, Free Swivel, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 54S-5 is a Brass/Steel 1/2" industrial plug from the Foster 5 Se...

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$ 13.79
$ 13.79 - $ 13.79
$ 13.79
$ 10.99
$ 10.99 - $ 10.99
$ 10.99
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 18.99
$ 18.99 - $ 18.99
$ 18.99
$ 15.19
$ 15.19 - $ 15.19
$ 15.19

Foster 52S-5, 1/2" Industrial Plug x 3/8" Male NPT, 5 Series, Free Swivel, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 52S-5 is a Brass/Steel 1/2" industrial plug from the Foster 5 Se...

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$ 18.99
$ 18.99 - $ 18.99
$ 18.99
$ 15.19
$ 15.19 - $ 15.19
$ 15.19
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 13.99
$ 13.99 - $ 13.99
$ 13.99
$ 11.19
$ 11.19 - $ 11.19
$ 11.19

Foster 57-5, 1/2" Industrial Plug x 3/4" Female NPT, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 57-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 13.99
$ 13.99 - $ 13.99
$ 13.99
$ 11.19
$ 11.19 - $ 11.19
$ 11.19
Save 20% Save %

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